To estimate the proportion of traffic deaths in a region last year that were due to overspeeding,
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To estimate the proportion of traffic deaths in a region last year that were due to overspeeding, determine the necessary sample size for the estimate to be accurate to within 0.05 with probability 0.90.
Based on results of studies reported by the region’s Traffic Safety Administration, we expect the proportion to be about 0.25.
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Related Book For 
Statistical Methods For The Social Sciences
ISBN: 9781292220314
5th Global Edition
Authors: Alan Agresti
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